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Why is urea used in trucks?

2025-10-24

Urea is used in trucks primarily for selective catalytic reduction (SCR) systems to reduce harmful nitrogen oxide (NOx) emissions from diesel engines‌.

 

Here's how it works:

‌1.AdBlue Solution‌: Urea (usually in aqueous form as AdBlue) is injected into the exhaust stream, where it decomposes into ammonia (NH₃) and carbon dioxide (CO₂)‌

2.‌Chemical Reaction‌: The ammonia reacts with NOx in the SCR catalyst to convert pollutants into harmless nitrogen (N₂) and water (H₂O)‌

 

Catalytic reduction reaction. Through the above reaction, the vast majority of the urea solution is converted into gaseous NH3, which mixes with diesel engine exhaust gas during the flow process. After entering the catalytic converter, a catalytic reduction reaction occurs. NH3 and NOx will undergo a catalytic reduction reaction on the surface of the catalyst. The main reaction equation is as follows:

 

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Why is urea used in trucks?

2025-10-24

Urea is used in trucks primarily for selective catalytic reduction (SCR) systems to reduce harmful nitrogen oxide (NOx) emissions from diesel engines‌.

 

Here's how it works:

‌1.AdBlue Solution‌: Urea (usually in aqueous form as AdBlue) is injected into the exhaust stream, where it decomposes into ammonia (NH₃) and carbon dioxide (CO₂)‌

2.‌Chemical Reaction‌: The ammonia reacts with NOx in the SCR catalyst to convert pollutants into harmless nitrogen (N₂) and water (H₂O)‌

 

Catalytic reduction reaction. Through the above reaction, the vast majority of the urea solution is converted into gaseous NH3, which mixes with diesel engine exhaust gas during the flow process. After entering the catalytic converter, a catalytic reduction reaction occurs. NH3 and NOx will undergo a catalytic reduction reaction on the surface of the catalyst. The main reaction equation is as follows:

 

neueste Unternehmensnachrichten über Why is urea used in trucks? 0

 
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